Abstract—The main subject of the study is an analysis of time series of the width of annual rings of spruce and pine (D) that were obtained during the implementation of a scientific project supported by the Institute of Astronomy of the Bulgarian Academy of Sciences and the Ministry of Agriculture and Food in 2012–2014. The project is a continuation of our previous study (Komitov and Kaftan, 2019). Of the 45 wood samples collected in the project, only four are Pinopsidae: one is spruce (Picea), and the other three are pine (Pinus). The age of the samples is in the range of 65–129 years. We used two methods to obtain statistically significant cycles of fluctuations in the width of annual rings: T-R periodogram algorithm and wavelet analysis. Statistically significant cycles lasting 10–11, 20–22, 25, 38, and 64–68 years were confidently identified. There are solar and geophysical analogs for all of these fluctuations. Statistically significant mutual correlation relationships that take into account the time shift in the range of 0–5 years between D pine samples, temperatures, and precipitation at neighboring meteorological stations were established. There are also secondary extrema of the correlation coefficients after the mutual displacement of time series by 20–25 years. This result seems to be additional evidence of the solar–geophysical origin of the obtained dependencies.

摘要—该研究的主要主题是分析云杉和松树年轮宽度的时间序列（D）是在实施一项由保加利亚科学院天文研究所和农业和食品部于2012-2014年资助的科学项目期间获得的。该项目是我们先前研究的延续（Komitov and Kaftan，2019）。在该项目收集的45个木材样本中，只有4个是藜科：一个是云杉（Picea），另外三个是松木（Pinus）。样本的年龄在65-129岁之间。我们使用两种方法来获得年轮宽度的统计上显着的波动周期：TR周期图算法和小波分析。有信心地确定了持续10-11年，20-22年，25年，38年和64-68年的具有统计学意义的周期。所有这些波动都有太阳和地球物理的类似物。确定了邻近气象站的D松样本，温度和降水。时间序列相互位移20-25年后，相关系数也存在二次极值。该结果似乎是所获得依赖关系的太阳地球物理起源的补充证据。